Update assembly info for release 2.1.0

Author: sharwell

OpenInExternalBrowser/Properties/AssemblyInfo.cs

@@ -37,7 +37,7 @@
 // [assembly: AssemblyVersion("1.0.*")]
 [assembly: AssemblyVersion("2.1.0.0")]
 [assembly: AssemblyFileVersion("2.1.0.0")]
-[assembly: AssemblyInformationalVersion("2.1.0-dev")]
+[assembly: AssemblyInformationalVersion("2.1.0")]
 
 [assembly: ProvideCodeBase(
     AssemblyName = "Tvl.VisualStudio.Shell.Utility.10",